1
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Wong SM, Choy PY, Zhao Q, Yuen OY, Yeung CC, So CM, Kwong FY. Design of Benzimidazolyl Phosphines Bearing Alterable P, O or P, N-Coordination: Synthesis, Characterization, and Insights into Their Reactivity. Organometallics 2021. [DOI: 10.1021/acs.organomet.0c00816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shun Man Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Pui Ying Choy
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Qingyang Zhao
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - On Ying Yuen
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Chung Chiu Yeung
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Chau Ming So
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Fuk Yee Kwong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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2
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Camp AM, Kita MR, Grajeda J, White PS, Dickie DA, Miller AJM. Mapping the Binding Modes of Hemilabile Pincer-Crown Ether Ligands in Solution Using Diamagnetic Anisotropic Effects on NMR Chemical Shift. Inorg Chem 2017; 56:11141-11150. [PMID: 28872310 DOI: 10.1021/acs.inorgchem.7b01485] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A protocol for identifying ligand binding modes in a series of iridium pincer complexes bearing hemilabile aza-crown ether ligands has been developed using readily accessible NMR methods. The approach was tested on a collection of 13 structurally diverse pincer-crown ether complexes that include several newly characterized species. New synthetic routes enable facile interconversion of coordination modes and supporting ligands. Detailed structural assignments of five complexes reveal that the difference in chemical shift (Δδ) between geminal protons in the crown ether is influenced by diamagnetic anisotropy arising from halides and other ligands in the primary coordination sphere. The average difference in chemical shift between diastereotopic geminal protons in the crown ether macrocycle (Δδavg), as determined through a single 1H-13C HSQC experiment, provides information on the pincer ligand binding mode by establishing whether the macrocycle is in close proximity to the metal center. The Δδavg values for binding modes that involve chelating ether(s) bound to iridium are roughly 2-fold larger than those for tridentate complexes with no Ir-O bonds.
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Affiliation(s)
- Andrew M Camp
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Matthew R Kita
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Javier Grajeda
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Peter S White
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Diane A Dickie
- Department of Chemistry, Brandeis University , 415 South Street, Waltham, Massachusetts 02453, United States
| | - Alexander J M Miller
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
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3
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Organonickel complexes encumbering bis-imidazolylidene carbene ligands: Synthesis, X-ray structure and catalytic insights on Buchwald-Hartwig amination reactions. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.12.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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4
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Miller AJM. Controlling ligand binding for tunable and switchable catalysis: cation-modulated hemilability in pincer-crown ether ligands. Dalton Trans 2017; 46:11987-12000. [DOI: 10.1039/c7dt02156a] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The development of cation-responsive “pincer-crown ether” complexes featuring tunable hemilability is reviewed in the context of switchable and tunable catalysis.
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5
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Guram AS. 2016 Paul N. Rylander Award Address: Enabling Palladium/Phosphine-Catalyzed Cross-Coupling Reactions for Practical Applications. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.6b00233] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anil S. Guram
- Art of Elements, LLC, 1176 Tourmaline
Drive, Thousand Oaks, California 91320, United States
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6
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Kim SH, Kim M, Verkade JG, Kim Y. A Tuned Bicyclic Proazaphosphatrane for Catalytically EnhancedN-Arylation Reactions with Aryl Chlorides. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403428] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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7
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Nickel(II) complex incorporating methylene bridged tetradentate dicarbene ligand as an efficient catalyst toward CC and CN bond formation reactions. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2014.10.031] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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8
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On the Reactivity of Platina‐β‐diketone and Acetylplatinum(II) Complexes toward 2‐(Diphenylphosphanyl)benzaldehyde and Its Dioxolane Derivative. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Meiries S, Speck K, Cordes DB, Slawin AMZ, Nolan SP. [Pd(IPr*OMe)(acac)Cl]: Tuning the N-Heterocyclic Carbene in Catalytic C–N Bond Formation. Organometallics 2012. [DOI: 10.1021/om3011867] [Citation(s) in RCA: 137] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Sebastien Meiries
- EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, KY16 9ST, U.K
| | - Klaus Speck
- EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, KY16 9ST, U.K
| | - David B. Cordes
- EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, KY16 9ST, U.K
| | | | - Steven P. Nolan
- EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, KY16 9ST, U.K
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10
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Barquín M, Ciganda R, Garralda MA, Ibarlucea L, Mendicute‐Fierro C, Rodríguez‐Diéguez A, Seco JM. Iridium and Rhodium Complexes with the Hemilabile Ligand [2‐(1,3‐Dioxolane‐2‐yl)phenyl]diphenylphosphane – Behaviour in Solution and Structural Characterization. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201201188] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Montserrat Barquín
- Facultad de Química de San Sebastián, Universidad del País Vasco, UPV/EHU, Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | - Roberto Ciganda
- Facultad de Química de San Sebastián, Universidad del País Vasco, UPV/EHU, Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | - María A. Garralda
- Facultad de Química de San Sebastián, Universidad del País Vasco, UPV/EHU, Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | - Lourdes Ibarlucea
- Facultad de Química de San Sebastián, Universidad del País Vasco, UPV/EHU, Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | - Claudio Mendicute‐Fierro
- Facultad de Química de San Sebastián, Universidad del País Vasco, UPV/EHU, Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
| | | | - José M. Seco
- Facultad de Química de San Sebastián, Universidad del País Vasco, UPV/EHU, Apdo. 1072, 20080 San Sebastián, Spain, http://www.ehu.es
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11
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Ma F, Xie X, Zhang L, Peng Z, Ding L, Fu L, Zhang Z. Palladium-catalyzed amidation of aryl halides using 2-dialkylphosphino-2'-alkoxyl-1,1'-binaphthyl as ligands. J Org Chem 2012; 77:5279-85. [PMID: 22624625 DOI: 10.1021/jo3005827] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Palladium-catalyzed intermolecular C-N bond-forming reactions between aryl halides and amides are described using 2-dialkylphosphino-2'-alkoxyl-1,1'-binaphthyl, which is both bulky and electron-rich, as the ligand. A variety of amides, including aliphatic and aromatic primary amides, lactams, and carbamates, were viable substrates for the amidation, which exhibited good functional group compatibility. By tuning the substituents at the 2,2'-position of 1,1'-binaphthyl of the ligand, the palladium-catalyzed amidation of bulky aryl halides was realized and this coupling reaction was used to synthesize 2-amino-2'-methoxy-1,1'-binaphthyl in high yield.
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Affiliation(s)
- Fangfang Ma
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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12
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Ros A, Estepa B, Bermejo A, Álvarez E, Fernández R, Lassaletta JM. Phosphino Hydrazones as Suitable Ligands in the Asymmetric Suzuki–Miyaura Cross-Coupling. J Org Chem 2012; 77:4740-50. [DOI: 10.1021/jo300548z] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Abel Ros
- Instituto de Investigaciones Químicas (IIQ), CSIC/US, Américo Vespucio
49, 41092 Seville, Spain
| | - Beatriz Estepa
- Departamento de Química Orgánica, Universidad de Sevilla, Apdo. de Correos No. 1203, 41071, Seville,
Spain
| | - Antonio Bermejo
- Departamento de Química Orgánica, Universidad de Sevilla, Apdo. de Correos No. 1203, 41071, Seville,
Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Químicas (IIQ), CSIC/US, Américo Vespucio
49, 41092 Seville, Spain
| | - Rosario Fernández
- Departamento de Química Orgánica, Universidad de Sevilla, Apdo. de Correos No. 1203, 41071, Seville,
Spain
| | - José M. Lassaletta
- Instituto de Investigaciones Químicas (IIQ), CSIC/US, Américo Vespucio
49, 41092 Seville, Spain
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13
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Efficient palladium-catalyzed amination of aryl chlorides using di(dicyclohexylamino)phenylphosphine as a PN2 ligand. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.10.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Guastavino JF, Rossi RA. Synthesis of Benzo-fused Heterocycles by Intramolecular α-Arylation of Ketone Enolate Anions. J Org Chem 2011; 77:460-72. [DOI: 10.1021/jo202012n] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Javier F. Guastavino
- INFIQC, Departamento de Química
Orgánica,
Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
| | - Roberto A. Rossi
- INFIQC, Departamento de Química
Orgánica,
Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
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15
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Lü B, Li P, Fu C, Xue L, Lin Z, Ma S. 2,6-Diisopropoxyphenyl(dicyclohexyl)phosphine: A New Ligand for Palladium-Catalyzed Amination Reactions of Aryl Chlorides with Potassium Hydroxide as the Base. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201000349] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Zhou Y, Verkade J. Highly Efficient Ligands for the Palladium-Assisted DoubleN-Arylation of Primary Amines for One-Sep Construction of Carbazoles. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900846] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Lundgren R, Sappong-Kumankumah A, Stradiotto M. A Highly Versatile Catalyst System for the Cross-Coupling of Aryl Chlorides and Amines. Chemistry 2010; 16:1983-91. [DOI: 10.1002/chem.200902316] [Citation(s) in RCA: 158] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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Fleckenstein CA, Plenio H. Sterically demanding trialkylphosphines for palladium-catalyzed cross coupling reactions—alternatives to PtBu3. Chem Soc Rev 2010; 39:694-711. [DOI: 10.1039/b903646f] [Citation(s) in RCA: 307] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Moncho S, Ujaque G, Espinet P, Maseras F, Lledós A. The role of amide ligands in the stabilization of Pd(II) tricoordinated complexes: is the Pd–NR2 bond order single or higher? Theor Chem Acc 2009. [DOI: 10.1007/s00214-009-0539-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Beck R, Sun H, Li X, Klein HF. Regioselectiveortho-Metallation of 2-Diphenylphosphanylpyridine and (2-(2-Diphenylphosphanyl)phenyl)-1-3-dioxalane with Methyltetrakis(trimethylphosphane)cobalt(I). Z Anorg Allg Chem 2009. [DOI: 10.1002/zaac.200800309] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Surry D, Buchwald S. Biarylphosphanliganden in der palladiumkatalysierten Aminierung. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800497] [Citation(s) in RCA: 500] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Moncho S, Ujaque G, Lledós A, Espinet P. When Are Tricoordinated PdIISpecies Accessible? Stability Trends and Mechanistic Consequences. Chemistry 2008; 14:8986-8994. [DOI: 10.1002/chem.200800423] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Synthesis and evaluation of phosphine–N ligands in transition metal-catalysed CC bond forming reactions. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcata.2008.01.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
Palladium-catalyzed amination reactions of aryl halides have undergone rapid development in the last 12 years, largely driven by the implementation of new classes of ligands. Biaryl phosphanes have proven to provide especially active catalysts in this context. This Review discusses the application of these catalysts in C-N cross-coupling reactions in the synthesis of heterocycles and pharmaceuticals, in materials science, and in natural product synthesis.
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Affiliation(s)
- David S Surry
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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25
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Vela J, Lief GR, Shen Z, Jordan RF. Ethylene Polymerization by Palladium Alkyl Complexes Containing Bis(aryl)phosphino-toluenesulfonate Ligands. Organometallics 2007. [DOI: 10.1021/om700869c] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Javier Vela
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Graham R. Lief
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Zhongliang Shen
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
| | - Richard F. Jordan
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637
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Carbene adduct of cyclopalladated ferrocenylimine as an efficient catalyst for the amination of aryl chlorides. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.05.022] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Weng Z, Teo S, Hor TSA. Metal unsaturation and ligand hemilability in Suzuki coupling. Acc Chem Res 2007; 40:676-84. [PMID: 17461542 DOI: 10.1021/ar600003h] [Citation(s) in RCA: 169] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The combinative and complementary use of a hemilabile difunctional ligand on a metal, notably palladium, that is coordinatively and electronically unsaturated has led to the isolation of a string of unexpected low-valent complexes that are structurally intriguing. The ligands of interest are primarily ferrocenes functionalized by [P,N] and [P,O] donors. The characterization of these active Suzuki catalysts, which support sp(2)-sp(2) couplings, give valuable insights into the key Suzuki intermediates such as those arising from the reductive elimination, transmetallation, and oxidative addition steps. In this Account, we shall review and discuss our recent results in relation to selected developments in other laboratories.
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Affiliation(s)
- Zhiqiang Weng
- Department of Chemistry, National University of Singapore, Kent Ridge, Singapore 117543
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Xie X, Zhang TY, Zhang Z. Synthesis of bulky and electron-rich MOP-type ligands and their applications in palladium-catalyzed C-N bond formation. J Org Chem 2007; 71:6522-9. [PMID: 16901139 DOI: 10.1021/jo060945k] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of 2-dialkylphosphino-2'-alkoxy-1,1'-binaphthyl ligands (6a-c and 8a-c) have been prepared conveniently by a lithium-initiated ring-opening reaction of dinaphthofuran, followed by selective phosphorylation. These compounds displayed a remarkable air and moisture stability, both in solid form and in solution. Application of these phosphine ligands in palladium-catalyzed C-N bond forming reactions revealed the crucial roles of the steric bulk of the substituents on the phosphorus atom governing the catalytic activity. Specifically, 2-di-tert-butylphosphino-2'-isopropoxy-1,1'-binaphthyl (8b) proved to be the most effective for the aminations of aryl halides with primary amines, while the less bulky 2-dicyclohexyl-2'-methoxy-1,1'-binaphthyl (6a) was more effective for the aminations with secondary amines. The steric and electronic effects of the ligands were analyzed to account for these observations.
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Affiliation(s)
- Xiaomin Xie
- School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, China
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29
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Chen G, Lam WH, Fok WS, Lee HW, Kwong FY. Easily Accessible Benzamide-Derived P,O Ligands (Bphos) for Palladium-Catalyzed Carbon–Nitrogen Bond-Forming Reactions. Chem Asian J 2007; 2:306-13. [PMID: 17441166 DOI: 10.1002/asia.200600322] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Easily accessible benzamide-derived hemilabile phosphine ligands were efficiently prepared through ortho-directed lithiation of the corresponding N,N-diethylbenzamide followed by quenching with chlorodialkylphosphines. These structurally simple hemilabile ligands were found to be highly effective in palladium-catalyzed amination of aryl and heteroaryl chlorides. Various sterically congested and functionalized aryl halide substrates were compatible in these reaction conditions. By using optimized reaction conditions, remarkable catalyst productivity (total turnover number up to 8400) was obtained.
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Affiliation(s)
- Guoshu Chen
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology, Shenzhen, China
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30
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Cho SD, Kim HK, Yim HS, Kim MR, Lee JK, Kim JJ, Yoon YJ. Suzuki–Miyaura coupling reaction of aryl chlorides using di(2,6-dimethylmorpholino)phenylphosphine as ligand. Tetrahedron 2007. [DOI: 10.1016/j.tet.2006.12.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Teo S, Weng Z, Hor TSA. 1,1‘-P/O-Ferrocenyl Ligands in Palladium-Catalyzed Suzuki Coupling of Aryl Chlorides. Organometallics 2006. [DOI: 10.1021/om050791j] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shihui Teo
- Institute of Chemical and Engineering Sciences, No. 1, Pesek Road, Jurong Island, Singapore 627833, and Department of Chemistry, National University of Singapore, 3 Science Drive 3, Kent Ridge, Singapore 117543
| | - Zhiqiang Weng
- Institute of Chemical and Engineering Sciences, No. 1, Pesek Road, Jurong Island, Singapore 627833, and Department of Chemistry, National University of Singapore, 3 Science Drive 3, Kent Ridge, Singapore 117543
| | - T. S. Andy Hor
- Institute of Chemical and Engineering Sciences, No. 1, Pesek Road, Jurong Island, Singapore 627833, and Department of Chemistry, National University of Singapore, 3 Science Drive 3, Kent Ridge, Singapore 117543
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32
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Chapman CJ, Frost CG, Mahon MF. Structure and reactivity of new phosphine ligands containing the hemi-labile sulfone moiety. Dalton Trans 2006:2251-62. [PMID: 16673040 DOI: 10.1039/b513390d] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
New heterofunctional phosphine ligands have been synthesised, incorporating the substitutionally labile sulfone and sulfonamide moieties as chelating groups, which display activity in the palladium-catalysed Suzuki and amination cross-coupling reactions. Single-crystal X-ray diffraction studies of the complexes formed with [Pd(mu-Cl)(dmba)] (dmba-H = N,N-dimethylbenzylamine) highlight the coordinating nature of these ligands; showing the formation of a bis chelate complex through a six-membered Pd-P-C-C-S-O ring with the sulfonamide class of ligands.
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Trzeciak AM, Ziółkowski JJ. Structural and mechanistic studies of Pd-catalyzed CC bond formation: The case of carbonylation and Heck reaction. Coord Chem Rev 2005. [DOI: 10.1016/j.ccr.2005.02.001] [Citation(s) in RCA: 157] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Dai WM, Zhang Y. A family of simple amide-derived air-stable P,O-ligands for Suzuki cross-coupling of unactivated aryl chlorides. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2004.12.133] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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35
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Schlummer B, Scholz U. Palladium-Catalyzed CN and CO Coupling-A Practical Guide from an Industrial Vantage Point†. Adv Synth Catal 2004. [DOI: 10.1002/adsc.200404216] [Citation(s) in RCA: 591] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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The development of palladium catalysts for CC and Cheteroatom bond forming reactions of aryl chloride substrates. Coord Chem Rev 2004. [DOI: 10.1016/j.ccr.2004.06.012] [Citation(s) in RCA: 528] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Urgaonkar S, Verkade JG. Scope and Limitations of Pd2(dba)3/P(i-BuNCH2CH2)3N-Catalyzed Buchwald−Hartwig Amination Reactions of Aryl Chlorides. J Org Chem 2004; 69:9135-42. [PMID: 15609947 DOI: 10.1021/jo048716q] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Proazaphosphatrane ligands in combination with Pd(2)(dba)(3) generate highly active catalysts for Buchwald-Hartwig amination of aryl chlorides. In particular, commercially available P(i-BuNCH(2)CH(2))(3)N is a highly general and efficient ligand, allowing the coupling of an electronically diverse set of aryl chlorides, including chloropyridines, with a wide variety of amines using 1 mol % of Pd at 100 degrees C. Either a 1:1 or 2:1 ratio of ligand to Pd was found to be effective. This catalyst system performs exceptionally well for sterically hindered substrates, even with only 0.25 mol % of Pd. It is shown that NaOH can also be used as the base (instead of NaO-t-Bu) allowing functionalized substrates to participate in these reactions.
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Affiliation(s)
- Sameer Urgaonkar
- Department of Chemistry, Gilman Hall, Iowa State University, Ames, Iowa 50011-3111, USA
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Michalik D, Kumar K, Zapf A, Tillack A, Arlt M, Heinrich T, Beller M. A short and efficient synthesis of N-aryl- and N-heteroaryl-N′-(arylalkyl)piperazines. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.01.066] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Frisch AC, Rataboul F, Zapf A, Beller M. First Kumada reaction of alkyl chlorides using N-heterocyclic carbene/palladium catalyst systems. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(03)00723-x] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Morise X, Braunstein P, Welter R. Enolphosphato−Phosphines: A New Class of P,O Ligands. Inorg Chem 2003; 42:7752-65. [PMID: 14632491 DOI: 10.1021/ic030032y] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The new bifunctional ligands Ph(2)PCH[double bond]CPh[OP(O)(OR)(2)] (1) (1a, R = Et; 1b, R = Ph) represent the first examples of P,O derivatives resulting from the association of a phosphine moiety and an enolphosphate group. The Z stereochemistry about the double bond provides a favorable situation for these ligands to act as P,O-chelates. Neutral and cationic Pd(II) complexes have been synthesized and characterized, in which 1a or 1b acts either as a P-monodentate ligand or a P,O-chelate, via coordination of the oxygen atom of the P[double bond]O group. In the latter case, it has been observed that phosphines 1a and 1b can display a hemilabile behavior, owing to successive dissociation and recoordination of the O atom. Competition experiments revealed that phosphine 1a presents a higher chelating ability than 1b, a feature ascribed to the more electrodonating properties of the ethoxy groups in 1a compared to the phenoxy groups in 1b. P,O-Chelation affords seven-membered metallocycles, which is unusual for P,O-chelates. Complexes trans-[PdCl(2)[Ph(2)PCH[double bond]C(Ph)OP(O)(OPh)(2)](2)] (2b), [PdCl[Ph(2)PCHdouble bond]C(Ph)OP(O)(OEt)(2)](mu-Cl)](2) (3a), [complex--see text] (8a'), and [complex--see text] (10a) have been structurally characterized. Interestingly, the seven-membered rings in 8a' and 10a adopt a sofa conformation with the double bond lying almost perpendicular to the plane containing the Pd, the two P, and the two O atoms.
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Affiliation(s)
- Xavier Morise
- Laboratoire de Chimie de Coordination and Laboratoire DECMET, UMR 7513 CNRS, Université Louis Pasteur, 4 rue Blaise Pascal, F-67070 Strasbourg Cedex, France.
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Urgaonkar S, Nagarajan M, Verkade JG. P(i-BuNCH2CH2)3N: an effective ligand in the palladium-catalyzed amination of aryl bromides and iodides. J Org Chem 2003; 68:452-9. [PMID: 12530871 DOI: 10.1021/jo0205309] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
It is shown that the bicyclic triaminophosphine P(i-BuNCH2CH2)3N serves as an effective ligand for the palladium-catalyzed amination of a wide array of aryl bromides and iodides. Other bicyclic or acyclic triaminophosphines, even those of similar basicity and/or bulk, were inferior.
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Affiliation(s)
- Sameer Urgaonkar
- Department of Chemistry, Gilman Hall, Iowa State University, Ames 50011, USA
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Takeuchi R, Ue N, Tanabe K, Yamashita K, Shiga N. Iridium complex-catalyzed allylic amination of allylic esters. J Am Chem Soc 2001; 123:9525-34. [PMID: 11572672 DOI: 10.1021/ja0112036] [Citation(s) in RCA: 167] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Iridium complex-catalyzed allylic amination of allylic carbonates was studied. The solvent strongly affected the catalytic activity. The use of a polar solvent such as EtOH is essential for obtaining the products in high yield. The reaction of (E)-3-substituted-2-propenyl carbonate and 1-substituted-2-propenyl carbonate with pyrrolidine in the presence of a catalytic amount of [Ir(COD)Cl](2) and P(OPh)(3) (P/Ir = 2) gave a branch amine with up to 99% selectivity. Both secondary and primary amines could be used for this reaction. When a primary amine was used, selective monoallylation occurred. No diallylation product was obtained. The reaction of 1,1-disubstituted-2-propenyl acetate with amines exclusively gave an alpha,alpha-disubstituted allylic amine. This reaction provides an alternative route to the addition of an organometallic reagent to ketimines for the preparation of such amines. The reaction of (Z)-3-substituted-2-propenyl carbonate with amines gave (Z)-linear amines with up to 100% selectivity. In all cases, no (E)-linear amine was obtained. The selectivities described here have not been achieved in similar palladium complex-catalyzed reactions.
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Affiliation(s)
- R Takeuchi
- Department of Chemistry, Graduate School of Integrated Science, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama 236-0027, Japan.
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Abstract
Addition and substitution reactions with carbon nucleophiles are fundamental processes in organic synthesis, and the development of general catalytic asymmetric variants thereof is still a major challenge today. In contrast to enantioselective alkyl transfer reactions, the corresponding arylations have not yet reached a high level of maturity. The existing protocols are either of no general applicability or are limited in terms of selectivity. This article summarizes established routes for catalytic asymmetric aryl transfer together with the latest developments in this area. The scope and limitations of this reaction are discussed.
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Affiliation(s)
- Carsten Bolm
- Institut für Organische Chemie RWTH Aachen Prof.-Pirlet-Strasse 1, 52056 Aachen (Germany)
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47
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Yang C, Cheung YK, Yao J, Wong YT, Jia G. Palladium and Platinum Complexes with a β-Cyclodextrin-Functionalized Phosphine Ligand. Organometallics 2000. [DOI: 10.1021/om000634e] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chuluo Yang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Yuk King Cheung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Junzhi Yao
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Yiu Tung Wong
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Guochen Jia
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
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Zapf A, Ehrentraut A, Beller M. Ein neues hocheffizientes Katalysatorsystem für die Kupplung von nichtaktivierten und desaktivierten Arylchloriden mit Arylboronsäuren. Angew Chem Int Ed Engl 2000. [DOI: 10.1002/1521-3757(20001117)112:22<4315::aid-ange4315>3.0.co;2-l] [Citation(s) in RCA: 141] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zapf A, Ehrentraut A, Beller M. A New Highly Efficient Catalyst System for the Coupling of Nonactivated and Deactivated Aryl Chlorides with Arylboronic Acids Palladium-Catalyzed Reactions for Fine Chemical Synthesis, Part 17. The authors thank C. Fuhrmann for the excellent support in the laboratory, Dipl.-Chem. W. Mägerlein for ligand samples of 2-(dicyclohexylphosphanyl)toluene and -anisole as well as DMC(2) for generous donations of palladium compounds. Part 16: F. Vollmüller, W. Mägerlein, S. Klein, J. Krause, M. Beller, Adv. Synth. Catal., in press. Angew Chem Int Ed Engl 2000; 39:4153-4155. [PMID: 11093237 DOI: 10.1002/1521-3773(20001117)39:22<4153::aid-anie4153>3.0.co;2-t] [Citation(s) in RCA: 417] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- A Zapf
- Institut für Organische Katalyseforschung an der Universität Rostock e. V. (IfOK) Buchbinderstrasse 5-6, 18055 Rostock (Germany)
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Jafarpour L, Nolan SP. Transition-metal systems bearing a nucleophilic carbene ancillary ligand: from thermochemistry to catalysis. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2000. [DOI: 10.1016/s0065-3055(00)46004-1] [Citation(s) in RCA: 227] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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